Need 95 gmc jimmy vacuum diagram. I have a loose

There is a vacuum routing guide under the hood on the federal emission certification sticker. If that Is no longer there I need to know the engine type, whether is federal or California certified engine emission system.

Either vacuum advance for the distributor or for the brake booster

See if this helps

Should have a vacuum hose diagram on the
Emissions Label on radiator support or glued
under the hood.
Just for engine compartment

There is a vacuum switch that is located just above the drive shaft that comes out of the transfer case that usually goes bad. Also check and make sure the vacuum lines are all good.They go to the actuator which is located under the battery box.The vacuum switch is just a plunger type.You can remove it with a 7/8 wrench I believe.You should be able to push the plunger in with your fingers and it should push in and out fairly easy.What usually happens is it sticks in.The vacuum line connector attaches to this switch.There are 3 vacuum lines on this connector.Hope this helps.Let me know if you need more help.Good luck.

There should be a diagram under the hood, or on the firewall or even on the radiator bracket. Manufacturers put it anywhere under the hood.

If it's a metal line, Your local auto parts store should be able to order it for you or worst case you'll have to make your own from straight tubbing and a bender. I don't recall ever seeing diagrams for metal lines, usually there pre made to replace the factory one or you can splice a replacement piece in place of a damaged section. AS far as the line goes to the module, try following it up to it with a good flahlight and a sharppe from the rear forward.

dayco belts come with the belt routing on the box when you buy them.the 4.3 v6 has both routings on the box

Here u go

sounds like it is loosing vacuum check all the lines for a crack even the engine lines will cause it to loose vacc. pressure. if it is not run to the vacuum reserve canister you may not have enough vacc. to hold the actuator in several times I just run new lines and that helped and not very costly.